ML is equal to 342 L 645 ML

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

20 ! brainliest ! add and simplify your answer.

Explain how to graph a scatterplot and its regression line using a regression calculator.